Attacks in the Sadr City neighborhood and elsewhere expose gaps in security in the Iraqi capital

BAGHDAD—A series of Islamic State bombings on Wednesday killed at least 88 people in Baghdad, marking one of the deadliest days of insurgent violence in Iraq’s capital in years and exposing the government’s failure to uproot extremists.

The first bomb struck a crowded market in the predominantly Shiite Muslim neighborhood of Sadr City, killing at least 62 people and wounding 86, mostly women and children, said Interior Ministry spokesman Brig. Gen. Saad Maan